The be verb shows the state of being. We must use the be verb to talk about many things.
what someone/something is:
what someone/something looks like:
what someone/something is doing:
where someone/something is:
man, student, Chinese, thirty years old.
beautiful, colorful, dark, small
studying, reading, playing, talking
in class, at home, on the desk
*Affirmative and Positive are used in the same way.
The present tense be verbs are am, is, are
The be verb can be used with: